As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED ACFT FAILED TO PRESSURIZE DURING CLIMB THROUGH 10,000 FT. RETURNED TO FIELD AND LANDED WITHOUT INCIDENT. MAINTENANCE TROUBLESHOT, R & R CABIN PRESSURE CONTROL PANEL, AND OUTFLOW VALVE. PERFORMED CHECKS IAW AMM. ACFT RELEASED FOR SERVICE.